LAST QUESTION
In an experiment, a petri dish with a colony of bacteria is exposed to cold temperatures and then warmed again.
a. Find a quadratic model for the data in the table.
b. Use the model to estimate the population of bacteria at 9 hours.
Time (hours) 0 1 2 3 4 5 6
Population (1000s)
5.1 3.03 1.72 1.17 1.38 2.35 4.08

Question

LAST QUESTION
In an experiment, a petri dish with a colony of bacteria is exposed to cold temperatures and then warmed again. 
a. Find a quadratic model for the data in the table. 
b. Use the model to estimate the population of bacteria at 9 hours. 
Time (hours)       0      1     2     3      4      5      6 
Population (1000s) 
                        5.1 3.03 1.72 1.17 1.38 2.35 4.08

anonymous · Answer

@zordoloom

anonymous · Answer

Do you know how to use quadratic regression?

anonymous · Answer

not at all

anonymous · Answer

Do you have any graphing calculator?

anonymous · Answer

try this function $$\large y=ax(x-1) + bx +c $$ solve the coefficients c,b,a in that order of each point in this order: (0,5.1), (1, 3.03), (2, 1.62)
after solving the coefficients, use x=9 and solve y.

anonymous · Answer

yes but unforuently i have no clue how to use the thing

anonymous · Answer

Okay, I can guide you. Can you please specify what kind of calculator you have

anonymous · Answer

Is it a ti-84, or some other kind of model.

anonymous · Answer

I can help you do this by hand, if you are willing to work it out.

anonymous · Answer

Okay, I've solved it, If you are ready to continue, please say so.

anonymous · Answer

@r0n4ld please don't post any answers yet.

anonymous · Answer

@zordoloom i only posted a solution. i have solved it too, and i am posting another method.

anonymous · Answer

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